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whats the best way to fix crack in grill?

Started by WHITE AND RED 69, January 15, 2011, 11:40:59 PM

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WHITE AND RED 69

I am getting ready to restore my grill and was wondering what are the best plastic filler products to patch a crack in the plastic. I was looking at a product called plastifix. anybody have any experience with it or recommend a better product?

http://www.urethanesupply.com/plastifixhowto.php
1969 Dodge Charger R/T
2016 Jeep Grand Cherokee 75th edition
1999 Jeep Grand Cherokee
1972 Plymouth Duster

gasoline_24


gasoline_24

Sorry, I guess I posted the same link as you.  I would highly recommend it. 

Patronus

You may want to drill a small hole at the end of the crack so it stops from cracking again.
'73 Cuda 340 5spd RMS
'69 Charger 383 "Luci"
'08 CRF 450r
'12.5 450SX FE

Hemidog

Quote from: Patronus on January 16, 2011, 10:42:48 AM
You may want to drill a small hole at the end of the crack so it stops from cracking again.
:iagree:

twodko

Amazon is where I bought my PlastiFix kit. I would recommend this stuff all day long! There are a few different formulations so I called the company for their best recommendation for a 40+ year old hard black injection molded plastic grille. I couldn't be happier with the repairs I made to my grille. Stuff is awesome. I'm not convinced there is any point in drilling a small "stop" hole at the end of the crack because its just going to get filled with epoxy anyway. Good luck and, as always, pix pix and more pix.  :2thumbs:
FLY NAVY/Marine Corps or take the bus!

WHITE AND RED 69

Sounds like the plastifix is the way to go. Thanks guys.   :cheers:  Soon as I get all my materials and get started I will get some pics up of the progress.

1969 Dodge Charger R/T
2016 Jeep Grand Cherokee 75th edition
1999 Jeep Grand Cherokee
1972 Plymouth Duster

tan top

Quote from: Hemidog on January 16, 2011, 11:50:09 AM
Quote from: Patronus on January 16, 2011, 10:42:48 AM
You may want to drill a small hole at the end of the crack so it stops from cracking again.
:iagree:

:yesnod:
then  melt it back togeather also with a soldering iron ,   what i done on mine  :yesnod:  then finished it in the normal way filler  , also  strenghten the back either  windshield glue / pu sealer  ,
Feel free to post any relevant picture you think we all might like to see in the threads below!

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 http://www.dodgecharger.com/forum/index.php/topic,120850.0.html

Patronus

"I'm not convinced there is any point in drilling a small "stop" hole at the end of the crack because its just going to get filled with epoxy anyway. "
Thats what they said about the Titanic too....
'73 Cuda 340 5spd RMS
'69 Charger 383 "Luci"
'08 CRF 450r
'12.5 450SX FE

twodko

FLY NAVY/Marine Corps or take the bus!

tan top

Feel free to post any relevant picture you think we all might like to see in the threads below!

Charger Stuff 
http://www.dodgecharger.com/forum/index.php/topic,86777.0.html
Chargers in the background where you least expect them 
http://www.dodgecharger.com/forum/index.php/topic,97261.0.html
C500 & Daytonas & Superbirds
http://www.dodgecharger.com/forum/index.php/topic,95432.0.html
Interesting pictures & Stuff 
http://www.dodgecharger.com/forum/index.php/topic,109484.925.html
Old Dodge dealer photos wanted
 http://www.dodgecharger.com/forum/index.php/topic,120850.0.html

ktneifert09

Definitely drill the hole. The end of the crack is extremely fine and :2thumbs: cannot be filled completely. Drilling the hole rounds off the end and eliminates the stress concentration. Mechanical engineering 101. BSME Cal Poly and MSME Berkeley. Trust me... :2thumbs:
Plans are useless; planning is indispensible.
Especially with an old car!

charger2fast4u

Quote from: tan top on January 17, 2011, 12:53:31 PM

http://www.fatiguetech.com/coldEX_stop_crack.html 

:popcrn:

has anyone used this sleeve method? just to clear this up you drill a hole at end of crack push the sleeve in the hole until flush then remove sleeve tool and cut the exess length off of the sleeve? anyone use this method and is it any more of a better fix then just drilling a hole and filling the crack and hole with a plastic fill compound?

68blue

Maybe I'm crazy but as the grill was ABS plastic on my 68 I fixed the cracks with old style plastic model glue.

twodko

ktneifert09, I stand corrected. Hey are you going to Redding this year?
FLY NAVY/Marine Corps or take the bus!

Patronus

Im just guessing, but I think the sleeve method is for in concrete...?  :shruggy:
'73 Cuda 340 5spd RMS
'69 Charger 383 "Luci"
'08 CRF 450r
'12.5 450SX FE

twodko

FLY NAVY/Marine Corps or take the bus!

Patronus

'73 Cuda 340 5spd RMS
'69 Charger 383 "Luci"
'08 CRF 450r
'12.5 450SX FE

ktneifert09

Nope not going to Redding. All you need is the tiniest hole. 1/32 will do it. The idea is to round of the tip of the hole. Then just fill it with the same stuff you use for filling the rest of the crack. He's right, you use sleeves in material that's brittle like ceramic or concrete.
Plans are useless; planning is indispensible.
Especially with an old car!

Patronus

'73 Cuda 340 5spd RMS
'69 Charger 383 "Luci"
'08 CRF 450r
'12.5 450SX FE

doctor4766

Damn, I read the topic as "whats the best way to fix crack in girl?"
Gotta love a '69

Wicked72

Im a little late on the topic but I bought a plastic welder to repair the abs bottom of my hovercraft,(not a toy, a real two person hovercraft). I can weld every type of plastic and I was surprised how handy it has been. I did not realize how much crap I have that I can just fix my welding it back together. I mean welding metal obviously is awsome and extremely handy so having a plastic welder is that much better!
M-Massively O-Over P-Powered A-And R-Respected

bobfist

www.bobfist.com
Muscle Car Restorations & Reproduction
Sweden

TXcharger70

I in the middle of repairing my grille and I tried the plastic welder and didn't really work well. I used Plastifix and seem to work great so far

Wicked72

what kind of welder did you use? Mine is an iron type and I can shape things perfect. I have a ton of exp with plasting welding thou. plastifix is great stuff and so easy to use!
M-Massively O-Over P-Powered A-And R-Respected

twodko

Doc, what are we going to do with you? You just let out some of that "randy lad" in you!  :smilielol:   :smilielol:   :smilielol:    Don't change!  :2thumbs:
FLY NAVY/Marine Corps or take the bus!

JerseyJoe

Didn't I see a thread here long ago about using shavings from an old grill or similar plastic, using acetone to "melt" them into a paste and filling cracks with that?   :shruggy:

   I know it's for old school/budget types, and I'm cheap  :lol:

doctor4766

Quote from: twodko on February 19, 2011, 08:33:56 PM
Doc, what are we going to do with you? You just let out some of that "randy lad" in you!  :smilielol:   :smilielol:   :smilielol:    Don't change!  :2thumbs:
Just reliving my youth
Gotta love a '69

TXcharger70

Quote from: JerseyJoe on February 25, 2011, 09:46:46 AM
Didn't I see a thread here long ago about using shavings from an old grill or similar plastic, using acetone to "melt" them into a paste and filling cracks with that?   :shruggy:

   I know it's for old school/budget types, and I'm cheap  :lol:

Speaking of Acetone is the liquid that plastifix uses acetone? It smells a lot like it and I was thinking i could just pick up some acetone cause i ran out of the liquid that plastifix provides.